I ran a GPS guided scraper tractor for several months here in Nor Cal, two years ago. That thing was pretty impressive. First drive around the field to make a survey, then program which way and how much grade to put in it. It was mostly automated, but did require some input. Was fun to learn, but would have gotten VERY monotonous. Also, had the effect of degrading the land in certain situations, to the extent of scraping the top soil off and using it for fill, and exposing less desireable soils. Tried to avoid that as much as possible, but some was inevitable...
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Today's Featured Article - The Nuts and Bolts of Fasteners - Part 2 - by Curtis Von Fange. In our previous article we discussed capscrews, bolts, and nuts along with their relative hardness and thread sizes. In this segment we will finish up on our fasteners and then work with ways to keep them from loosening up in the field. Capscrews, bolts and nuts are not the only means of holding two parts together. When dealing with thinner metals like sheet tin, a long bolt and
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